package com.xiaoyang.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xiaoyang.common.BaseContext;
import com.xiaoyang.common.R;
import com.xiaoyang.domain.Employee;
import com.xiaoyang.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

/**
 * @auther XiaoYang
 * @DATE 2022/12/1-22:41
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    //前端发送的JSON对象用@RequestBody 封装为对象
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        /**
            1、将页面提交的密码password进行md5加密处理
            2、根据页面提交的用户名username查询数据库
            3、如果没有查询到则返回登录失败结果
            4、密码比对，如果不一致则返回登录失败结果
            5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
            6、登录成功，将员工id存入Session并返回登录成功结果
         */
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        //查到的员工封装为对象
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null){
            return R.error("用户名不存在,登陆失败...");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("密码错误,登陆失败...");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0){
            return R.error("账号被禁用,登陆失败...");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        HttpSession session = request.getSession();
        session.setAttribute("employee",emp.getId());
        log.info(emp.getUsername()+"登录成功...");
        BaseContext.close();
        return R.success(emp);
    }

    /**
     * 员工登出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前员工的id
        HttpSession session = request.getSession();
        log.info("退出成功...");
        session.removeAttribute("employee");
        BaseContext.close();
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息:{}",employee.toString());

        //设置初始密码123456，需要进行md5加密
        String md5Psd = DigestUtils.md5DigestAsHex("123456".getBytes());
        employee.setPassword(md5Psd);

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        //Long empID = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empID);
        //employee.setUpdateUser(empID);

        employeeService.save(employee);

        BaseContext.close();
        return R.success("新增员工成功");
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser((Long)request.getSession().getAttribute("employee"));

        employeeService.updateById(employee);

        BaseContext.close();
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据{}来查询员工信息...",id);
        Employee employee = employeeService.getById(id);
        if (employee != null)
            return R.success(employee);
        BaseContext.close();
        return R.error("未找到员工信息");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page<Employee>> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);

        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        BaseContext.close();

        return R.success(pageInfo);
    }

}
